A teenager whose mother was brutally murdered by his father has told a judge of his grief, describing the killer as an 'evil narcissist' who was never a role model to him.
'Rest in peace, mum, I love you and miss you, you will forever be in my heart,' said Daniel Boyd on Friday at his father's sentence hearing in the NSW Supreme Court.
Stephen Boyd, 53, pleaded guilty in August to the murder of his former partner, childcare worker Tina Kontozis, in her Bundeena home and to knocking his son unconscious with a bat on April 24, 2016.
The court heard Boyd repeatedly stabbed Ms Kontozis and hit her with a wooden bat.
Daniel Boyd (left, with family and supporters) has told a court that his father - who brutally murdered his mother before beating him with a bat - was an 'evil narcissist'
Stephen Boyd, 53, stabbed his former partner, childcare worker Tina Kontozis to death and then beat their son Daniel unconscious (Daniel and Tina pictured together)
Boyd pleaded guilty in August to the murder of his former partner
In his victim impact statement, the now 19-year-old said his mother's life was tragically taken away from her in horrific circumstances.
'I was also assaulted by the offender which